The Graph of Resistance

Chapter The Graph of Resistance

Complete Electronics Self Teaching Guide with Projects
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Complete Electronics Self Teaching Guide with Projects

  • CHAPTER 1 DC REVIEW AND PRETEST16 19  The following exercise is typical of many performed in transistor circuits. In this example, 6 volts is applied across a resistor, and 5 mA of current is required to flow through the resistor.QUESTIONSWhat value of resistance must be used and what power will it dissipate?R 5 P 5 ANSWERSRVIvoltsmAohmskPVIwat5555V53 5 356560.00512001.260.0050.030ttsmW530 20  Now, try these two simple examples.QUESTIONSWhat is the missing value? A. 50 volts and 10 mA. Find the resistance. B. 1 volt and 1 MΩ. Find the current. ANSWERSA. 5 kΩB. 1 μATHE GRAPH OF RESISTANCE 21  The voltage drop across a resistor and the current flowing through it can be plotted on a simple graph. This graph is called a V-I curve.Book Author c01 V1 07/04/2012 2:42 PM c01.indd 167/4/2012 2:44:26 PM